Which of the following criteria is $NOT$ associated with the Five Kingdom classification system?

What type of circulatory system is present in humans?

The energy spectrum of $\beta$-particles [number $N(E)$ as a function of $\beta$-energy $E$] emitted from a radioactive source is:

$A$ finite ladder is constructed by connecting several sections of $2\,\mu F$ and $4\,\mu F$ capacitor combinations as shown in the figure. It is terminated by a capacitor of capacitance $C$. What value should be chosen for $C$ such that the equivalent capacitance of the ladder between the points $A$ and $B$ becomes independent of the number of sections in between? (Answer in $\mu F$)

What is the gas liberated when alkaline formaldehyde solution is treated with $H_2O_2$?

Which of the following sets of quantum numbers is correct for an electron in a $4f$ orbital?